Compressor unit



April 20, 1926. 1,582,016

* H. E. sMri'H COMPRESSOR UNIT Filed Nov. 1, 1923, 2 Sheets-Sheet 1 I N flarold 2220 522211 2- I [nvenor April 20 1926. 1,582,016

v H. E. SMITH COMPRESSOR UNIT Filed Nov. 1, 1923 2 Sheets-Sheet 2 fzarold'fZno 5222i 2 I 21. 11:2 for Patented Apr. 20, 1926.

UNITED STATES PATENT OFFlCE.

HAROLD ELNO SMITH, OF CLEVELAND HEIGHTS, OHIO, ASSIGNOR, BY MES'NE AS- SIGNMENTS, TO KELVINATOR CORPORATION, OF DETROIT, IVIICHIGAN', A CORPORA- TION 'OF MICHIGAN.

COMPRESSOR UNIT.

Application filed November 1, 1923., Serial No. 672,092.

To all whom it may concern:

Be it known that I, IIAROLDAELNO SMITH, a citizen of the United States, residing at Cleveland Heights, in the county of Guyahoga and State of Ohio, have invented a. certain new and useful Improvement in Compressor Units, of which the following is a full, clear, and exact.clescription, reference being had to the accompanying drawings.

I11 mechanical refrigerating systems constructed for use in homes and other places where the attention of a skilled mechanic is not available, it is desirable to simplify to the greatest possible degree the construction and maintenance of the refrigerating unit and to so arrange the parts thereof as to minimize the likelihood of breakdown and at the same time facilitate repair. Coincidently with this it is still necessary to construct an efficient and smoothly operating unit. My invention is intended to provide a unit satisfying all of these requirements. In the drawings accompanying this specification and forming a part thereof 1 have shown, for purposes of illustration, one form which my invention may assume. In these drawings:

Figure 1 is a side elevation of this illus-,

trative embodiment of my invention,

Figure 2 is a plan view of the condenser coil shown in Figure 1, while Figure 3 is a section on the line 33 of Figure 2.

The device herein disclosed comprises a.

' compressor 11 driven, through reduction gearing positioned within a' housing 12, from a shaft 13 which is in turn directly connected to thearmature shaft of an electric motor 14 which is mounted, by means of a pedestal 15, upon the unit base 16 which also supports the compressor 11 and the remaining parts of the compressor unit. The inlet of the compressor 11 is controlled by a shutoff valve 17 and connected by means of a duct 18 to the outlet of the cooperating expansion coil while the outlet of the compressor 11 is controlled by. means of a shutoff valve 19 and connected by means of a duct 20 to a suitable condenser coil 21 which is in turn connected, through a shut-01f valve 22, with a duct 23 leading to a cooperatin expansion valve which is in turn connected to the inlet of the expansion coil.

In theconstruction herein shown this condens-er coil 21 is positioned in the otherwise i-acant space between the compressor 11 and the motor 14 and therefore interposed between the compressor 11 and the motor 14 and about the shaft 13.

In order to increase the total length of this coil 21 I prefer to form it flattened, as clearly shown in Figure 2, and extending the entire width of the compressor unit base 16 and in addition to form the coil 21 as a double helix consisting of a plurality of outer turns 24 vertically spaced from each other and a plurality of inner turns 25 each occupying a horizontal position midway between the horizontal positions of the two adjacent outer turns 24 and each connected between the outlet end of the next higher outer turn 24 and the inlet end of the next lower outer turn 24; whereby all of the turns 2-1 and 25 are arranged in a single compound coil having a continuous downward slope from its inlet end where it connects with the duct 20 to its outlet end where it connects with the shut-off valve 22 and therefore having no pockets in which the liquefying refrigerant can collect.

In order to still further increase the efliciency and capacity of the condenser coil 21 I prefer to provide forced ventilation directed against and through the condenser coil 21 and in the drawings I have shown this ventilation as effected by means of fans 26'and 27 both mounted upon the shaft 13, one positioned exteriorly of the coil 21 upon the condenser side thereof and blowing against the coil 21, and the other positioned within the coil 21 and blowing in the same general direction as the first fan.

It will be apparent. from the above description that the compressor unit herein shown and described accomplishes the ob jects of my invention and possesses advantages over the units heretofore developed. In addition, it will be obvious to those skilled in the art that the particular unit herein shown and described may be various-- ly changed without sacrificing the advantages of my invention or departing from the spirit thereof and it will therefore be understood that the disclosure herein is il; lustrative only and my invention not limited thereto,

I claim: coil in position to blow upon said coil, and

In combination, a motor, a compressor, a a second fan mounted upon said shaft withno shaft connecting said motor and said comin said coil in position to blow in the same pressor whereby said motor may operate said general direction as said first fan. 5 compressor, a vertical axis condenser 0011 in- In testimony whereof, I hereunto aflix terposed between said motor and said commy signature. pressor and about said' shaft, a first fan mounted upon said shaft exteriorly of said I I HAROLD ELNO SMITH. 

